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Add MCP Apps to NativeAOT coverage (#1711)

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Co-authored-by: Loi Nguyen <loinguyen@local>
Co-authored-by: Jeff Handley <jeffhandley@users.noreply.github.com>
This commit is contained in:
Loi Nguyen 2026-07-26 13:40:04 +07:00 • committed by GitHub
commit dfb2205cac
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1 changed files with 31 additions and 13 deletions
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38
tests/ModelContextProtocol.AotCompatibility.TestApp/Program.cs
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@ -1,17 +1,20 @@
using Microsoft.Extensions.DependencyInjection;
using ModelContextProtocol.Client;
using ModelContextProtocol.Extensions.Apps;
using ModelContextProtocol.Protocol;
using ModelContextProtocol.Server;
using System.IO.Pipelines;
Pipe clientToServerPipe = new(), serverToClientPipe = new();
// Create a server using a stream-based transport over an in-memory pipe.
await using McpServer server = McpServer.Create(
new StreamServerTransport(clientToServerPipe.Reader.AsStream(), serverToClientPipe.Writer.AsStream()),
new McpServerOptions()
{
ToolCollection = [McpServerTool.Create((string arg) => $"Echo: {arg}", new() { Name = "Echo" })]
});
var services = new ServiceCollection();
services.AddMcpServer()
.WithStreamServerTransport(clientToServerPipe.Reader.AsStream(), serverToClientPipe.Writer.AsStream())
.WithTools<AotTools>()
.WithMcpApps();
await using var serviceProvider = services.BuildServiceProvider();
var server = serviceProvider.GetRequiredService<McpServer>();
_ = server.RunAsync();
// Connect a client using a stream-based transport over the same in-memory pipe.
@ -20,13 +23,18 @@ await using McpClient client = await McpClient.CreateAsync(
// List all tools.
var tools = await client.ListToolsAsync();
if (tools.Count == 0)
var echo = tools.FirstOrDefault(t => t.Name == "Echo");
if (echo is null)
{
throw new Exception("Expected at least one tool.");
throw new Exception("Expected the Echo tool.");
}
var ui = echo.ProtocolTool.Meta?["ui"]?.AsObject();
if (ui?["resourceUri"]?.GetValue<string>() != "ui://aot/echo")
{
throw new Exception($"Unexpected app UI metadata: {ui}");
}
// Invoke a tool.
var echo = tools.First(t => t.Name == "Echo");
var result = await echo.InvokeAsync(new() { ["arg"] = "Hello World" });
if (result is null || !result.ToString()!.Contains("Echo: Hello World"))
{
@ -34,3 +42,11 @@ if (result is null || !result.ToString()!.Contains("Echo: Hello World"))
}
Console.WriteLine("Success!");
[McpServerToolType]
internal sealed class AotTools
{
[McpServerTool(Name = "Echo")]
[McpAppUi(ResourceUri = "ui://aot/echo")]
public static string Echo(string arg) => $"Echo: {arg}";
}